垂体大腺瘤的MRI诊断

本文回顾性分析垂体大腺瘤的MR表现,提高对垂体大腺瘤MR征象的认识.材料和方法:回顾性分析手术及病理证实为垂体腺瘤的MR图像267例,分析不同病理类型垂体腺瘤的部位、形态、大小、信号特点及肿瘤与周围结构,包括视交叉、鞍底、海绵窦的关系,并进行x2检验(检验水准α=0.05).结果:本组中发现垂体腺瘤易于向鞍上发展(90.3%).肿瘤向鞍下生长者占26.6%,向鞍旁生长者占39.9%.各组病理类型中,腺瘤向鞍上生长者以促性腺激素腺瘤最高(100%),向鞍旁生长者最多见为PRL腺瘤(55.7%),向鞍下生长最多见者为PRL腺瘤(40.3%),差异具有显著性(P＜0.05).结论:术前正确评估肿瘤的MR征象,有助于了解肿瘤的生长特性,确定进一步处理方式.

MR Diagnosis of Pituitary Macro - adenoma

Purpose: To evaluate the characteristic manifestations of pituitary macro - adenoma and improve the acknowledgement of pituitary macro - adenoma. Materials and Methods: The MR images of 267 patients, surgically and pathologically proved pituitary adenoma, were reviewed. The location, configuration, size, signal, and relationship between neoplasm and adjacent structures.And the manifestations of different sub - types were compared, X2 analysis was performed. Results: Macro - adenoma is inclined to superior development (90.3% ),inferior development accounts for 26.6% , latrel development accounts for 39.9% . Gonadotropin is apt to superior development; PRL is apt to both lateral and inferior development.The latter is statistically significant(P < 0.05) . Conclusion: To exactly evaluate the characteristic of pituitary adenoma is helpful to understand the biological characteristic and choose the corresponding therapy.